Staging: add CSR wifi module

This consists of two modules, the driver, and a "helper" module that is
just a wrapper around common kernel functions.  The wrapper module will
be removed soon, but for now it's needed.

These files were based on the csr-linux-wifi-5.0.3-oss.tar.gz package
provided by CSR and Blue Giga, and is covered under the license
specified in the LICENSE.txt file (basically dual BSD and GPLv2).  The
files were flattened out of the deep directory mess they were originally
in, and a few EXPORT_SYMBOL_GPL() were added in order for everything to
link properly with the helper module setup.

Cc: Mikko Virkkilä <mikko.virkkila@bluegiga.com>
Cc: Lauri Hintsala <Lauri.Hintsala@bluegiga.com>
Cc: Riku Mettälä <riku.mettala@bluegiga.com>
Cc: Veli-Pekka Peltola <veli-pekka.peltola@bluegiga.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 110 insertions, 0 deletions

diff --git a/drivers/staging/csr/unifi_dbg.c b/drivers/staging/csr/unifi_dbg.c
new file mode 100644
index 0000000..38d5708
--- /dev/null
+++ b/drivers/staging/csr/unifi_dbg.c
@@ -0,0 +1,110 @@
+/*
+ * ***************************************************************************
+ *  FILE:     unifi_dbg.c
+ *
+ *  PURPOSE:
+ *      Handle debug signals received from UniFi.
+ *
+ * Copyright (C) 2007-2008 by Cambridge Silicon Radio Ltd.
+ *
+ * Refer to LICENSE.txt included with this source code for details on
+ * the license terms.
+ *
+ * ***************************************************************************
+ */
+#include "unifi_priv.h"
+
+/*
+ * ---------------------------------------------------------------------------
+ *  debug_string_indication
+ *  debug_word16_indication
+ *
+ *      Handlers for debug indications.
+ *
+ *  Arguments:
+ *      priv            Pointer to private context structure.
+ *
+ *  Returns:
+ *      None.
+ * ---------------------------------------------------------------------------
+ */
+void
+debug_string_indication(unifi_priv_t *priv, const unsigned char *extra, unsigned int extralen)
+{
+    const unsigned int maxlen = sizeof(priv->last_debug_string) - 1;
+
+    if (extralen > maxlen) {
+        extralen = maxlen;
+    }
+
+    strncpy(priv->last_debug_string, extra, extralen);
+
+    /* Make sure the string is terminated */
+    priv->last_debug_string[extralen] = '\0';
+
+    unifi_info(priv, "unifi debug: %s\n", priv->last_debug_string);
+
+} /* debug_string_indication() */
+
+
+
+void
+debug_word16_indication(unifi_priv_t *priv, const CSR_SIGNAL *sigptr)
+{
+    int i;
+
+    if (priv == NULL) {
+        unifi_info(priv, "Priv is NULL\n");
+        return;
+    }
+
+    for (i = 0; i < 16; i++) {
+        priv->last_debug_word16[i] =
+                sigptr->u.DebugWord16Indication.DebugWords[i];
+    }
+
+    if (priv->last_debug_word16[0] == 0xFA11) {
+        unsigned long ts;
+        ts = (priv->last_debug_word16[6] << 16) | priv->last_debug_word16[5];
+        unifi_info(priv, " %10lu: %s fault %04x, arg %04x (x%d)\n",
+                   ts,
+                   priv->last_debug_word16[3] == 0x8000 ? "MAC" :
+                   priv->last_debug_word16[3] == 0x4000 ? "PHY" :
+                   "???",
+                   priv->last_debug_word16[1],
+                   priv->last_debug_word16[2],
+                   priv->last_debug_word16[4]);
+    }
+    else if (priv->last_debug_word16[0] != 0xDBAC)
+        /* suppress SDL Trace output (note: still available to unicli). */
+    {
+        unifi_info(priv, "unifi debug: %04X %04X %04X %04X %04X %04X %04X %04X\n",
+                   priv->last_debug_word16[0], priv->last_debug_word16[1],
+                   priv->last_debug_word16[2], priv->last_debug_word16[3],
+                   priv->last_debug_word16[4], priv->last_debug_word16[5],
+                   priv->last_debug_word16[6], priv->last_debug_word16[7]);
+        unifi_info(priv, "             %04X %04X %04X %04X %04X %04X %04X %04X\n",
+                   priv->last_debug_word16[8], priv->last_debug_word16[9],
+                   priv->last_debug_word16[10], priv->last_debug_word16[11],
+                   priv->last_debug_word16[12], priv->last_debug_word16[13],
+                   priv->last_debug_word16[14], priv->last_debug_word16[15]);
+    }
+
+} /* debug_word16_indication() */
+
+
+void
+debug_generic_indication(unifi_priv_t *priv, const CSR_SIGNAL *sigptr)
+{
+    unifi_info(priv, "debug: %04X %04X %04X %04X %04X %04X %04X %04X\n",
+               sigptr->u.DebugGenericIndication.DebugWords[0],
+               sigptr->u.DebugGenericIndication.DebugWords[1],
+               sigptr->u.DebugGenericIndication.DebugWords[2],
+               sigptr->u.DebugGenericIndication.DebugWords[3],
+               sigptr->u.DebugGenericIndication.DebugWords[4],
+               sigptr->u.DebugGenericIndication.DebugWords[5],
+               sigptr->u.DebugGenericIndication.DebugWords[6],
+               sigptr->u.DebugGenericIndication.DebugWords[7]);
+
+} /* debug_generic_indication() */
+